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dc.contributor.authorWafar, M V M-
dc.contributor.authorWafar, S-
dc.contributor.authorKumar, R Raj-
dc.identifier.issn0975-1033 (Online); 0379-5136 (Print)-
dc.description.abstractZooxanthellae freshly isolated from the coral host Pocillopora damicornis exhibited substrate-saturable uptake kinetics for ammonium, nitrate and urea. Maximum uptake velocity for ammonium [10. 1 nmol. (mug chl-a).-1h-1] was greater than that for nitrate [2.8 nmol.(mug chl-a).-1h-1] and urea [0.37 nmol. (mug chl-a).-1h-1]. Half-saturation constants for uptake of the three nitrogen compounds were in the range of 10-15 mumol.l-1. Generally, uptake of any one nitrogen substrate appears to be inhibited by the other 2 substrates when the latter are present in higher concentrations. The observed interactions can be explained by the uncompetitive model. These results are interpreted as indicative of a simultaneous uptake of all 3 nitrogen compounds by the zooxanthellae.en_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.rights CC Attribution-Noncommercial-No Derivative Works 2.5 Indiaen_US
dc.sourceIJMS Vol.22(2) [June 1993]en_US
dc.titleNitrogen uptake kinetics of freshly isolated zooxanthellaeen_US
Appears in Collections:IJMS Vol.22(2) [June 1993]

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